Valve-operating mechanism.



' I WW H W 1. H. SWAN. VALVE OPERATING MECHANISM.

APPLICATION FILED SEPT. ll. |914 I Fig 2- M59939 MILIIIIIEE: I.

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'im 'riin STATES riiinnroi rion f OHN; swam -H sse. mum 0F QHICAGQ; ILLINQISL:

VALVE-OPERATING- MEGHANISM;

' Be. it known, that I citizeniof the-United States of-America, and;

til-wot 0k? State of Illinois, have invented certain new and useful. Improvements.- in- Valve-Operating? l\ J.jeohanisms of. which the; follnwinga is.

a specification.

The main. obj ectlof this] invention; is to provide an. improvedform. otinstantaneous valve-operating; mechanism for thermostats. An. illustrative embodiment of the inven; tion. isv shown. in the accompanying drawings, in; which Figure 1 is a.

front elevationof, a. thermostat havmgthe improved. valve-operating,

mechanism, the expansion member being,

broken. away so. as tomore clearly. show the parts in. the. rear thereoit'.v Fig, 2 is a lon-.- gitudinal' sectional elevation. of the, same. Fig. 3 is a transverse sectional detail taken. onjtheline A.-A. ofiEig. 1. Fig.4. is: an en-. larged. transverse. sectional detail. taken on. thelineBI-B of Fig. 1.- Fig. 5 is a similar view taken. on the line CQ-C of Fig. 1.

In the construction shown. in the clrawings the, several parts aresupported on the frame. 1 herein shown, to bein the form of two substantially cylindrical parts 2 and 3 connected by an integral web 4.; The frameis suspended from a: plate 5, by. means of whi h the. 'ClBVlCG is secured; inflpositi'on on. The .plate' 5. also. the. inletand outlet. fiiiidpipes 6L andc7'.connected.thereto, I

the wall.

the former. leading 'fr'omi a. source. of fiuid pressure (not. shovv 'i).v and the latter leading tof afiuid motor (not. shown). which is. at-..

taehed to. the radiatorvalve.v Air ducts or the controllingvalve 11.operat'es-.

The valve ll ashereinsh WIl is in the.

form. ofj a cylindrical disk carried: on astem 12 slidably mounted in, the bushing 13Iwhich,

14 providing communication between the mber andhe. atmosphere. Th l e when, v in. one Position. is adapted to shut. ofii communication between he passages ,8 and. 9 and allow communication fbetween the passage Q- and the bleed openings. 14, andwhen.

Specification of Letters Patent} passage. 8.

passages .8 and 9 are formed in the parts .2 a

H A A 10,formed' in the lower end, of the framel, and in.

has formed therein bleed openings or vents ASSIGNOR. o KLIBFEL ANU ACT RI G as, AC Q A IQN F LLIN s,

in the other position, is adapted to shut off communicat on between the passage 9 and the atmosphere and. allowcommunication- Patented. Oct. 193, 1915.1 Application.filedseptembeig11,1914.; sefia iv .se1277.- i 3 betweenthe passages Sandj9. The, shifting. V

of the valve; from. one to the, other of these positions. is controlled. by a lever.15 actuated" by a fluid motor or diaphragm 1 6 The d aphragm, 16,. which may usual construction, is -inounted near the upe p r has .a. passage17 leading. therefrom. to) the ment carried by the lever 15;

The lever 15..isp1votally mounted at 19 be, of fan'y endofthe frame andftlie casing thereof A'cam .18fin"the' form of two cones arran'ged'base to, base is carried on the" on a post 20 supported on the framelr The 1 lower endof the lever is bifurcated so asto engage the recessed head. 21; carried on the valve stem 12. The ..spring elem ent which coactswiththe cam 18 is forme'ai 'qm a Qwire extended through an aperture 22in the lever and thenbentU-shape so. asv to provide-arms 23 extending up alongthesides ofthe} lever.

15 Grooves are formed in. the. lever to re";

ceive the arms23andfsecurethesame-against I dislod'g ment'. The arnis 23Qextend beyond the end ofthe, leversand. constitute ajfork engaging the conical parts of Ithe cam :18.

Ears 1'2 1 are formedfat the'upperfend Qt -the lever '15 which. embrace the rods; 23Tand [prent. thenli from becoming. displaced {when the crown otthe cam is being for c e dfbe- Y tween them...

A cl 25lis, slidably mounted on thegslevei' 15 and embraces the rods This clip. is movable along thelever solas to adjustthe tension of the arms, 23 forthe purpose of varying the. sensitiveness lthere'oii with r spect to the movement offthendiaphragm. 16.

The. actuation of thediaphragm; is controlled, by. 'agthermosta t member 26' formed in I the usual manner of two-metals having diiferent coefiicients, of expansion, The

member 26 issecured at itsupper end to a liig..2 'Z formed. on the frame 1 aiiclfextends down. along the. framev and terminates ad 1 The stem} 28-; is secured a 1 above Ithe valve 111 and, has a 1 vent or bleed; opening ,29 extending. there-t;

jacent to asters 28.

to the. frame through and providing communication. be-

tween, the passage 17; the. atmosphere. I The. member. 26. is provided with a gasket- 30.

securedfthereto by. means of a plate. 31 which is adapted "to be pressed against the. end. or;

the stem 28, by movement of the member 26 through change in temperature, for the purpose of closing the bleed opening 29. A dial 32 is also secured to the stud 27, outwardly of the member 26, and carries a pointer 33 pivotally mounted thereon. The pointer 33 has a part 34 engaging the member 26 and is adapted to alter the tension thereof through the shifting of'the pointer 33, as is customary in devices of this kind.

' A'valve 35 is mounted on the plate 5 and is arranged to control the flow of fluid from the pipe 6 to the passage 8. Also a restricting valve 36 is mounted on the frame and suitably-arranged to control the admission of air to the branch passage connecting the passages 8 and 17 The operation of the device shown is as follows: The pointer 33 is set to register with a certain marking on the dial 32 which indicatesthe temperature that is desired.

So long as the temperature is at or below such degree the thermostat member 26 is in its normal position and the bleed opening 29 is uncovered; The air pressure entering from the pipe 6 is therefore not effective upon the diaphragm 16, and the lever 15 is in the position shown in Fig. 2, so that the valve 11 is held in its depressed position for closing the admission of air from the passage 8 into the chamber 10. With the several parts in these positions the passage 9 is o en to the atmosphere through the bleed opening 14 and the motor (not shown) connected with the pipe 7 is allowed to exhaust to the atmosphere. A rise above the degree for which the device is set in the temperature room, affects the thermostat 26 in the well known manner, and causes the lower end thereof to moveinwardly so as to press the gasket 30 over the end of the stem 28 and closethe bleed opening 29. The air entering the passage 8 is therefore caused to flow up through the passage 17 into the diaphragm casing and urge the diaphragm outwardly. The cam 18 is thereby moved outwardly and the crown thereof is forced into the fork formed by the arms 23. The instant the crown of the cam 18 passes the arms 23, the tension thereof causes them to move inwardly down the inclined face of the cam so that the lever 15 is shifted to elevate the valve 11. This movement of the valve ll'closes the bleed openings 14 and opens communication between the passage 8 and the chamber 10 so that air is admitted to the motor passage 9 and causes the heat to be out 01f. The parts remain in these positions so long as the thermostat member 26 is held' in a position to close the bleed opening 29. As soon as the temperature has fallen sufficiently to affect the thermostat member 26 and cause it to assume its normal position, the opening of the passage 29 releases the pressure on the diaphragm 16 so that the cam 18 is shifted to its normal position as shown in Fig.2. The lever 15 is thus actuated to shift the valve 11 to again close the admission of air from the passage 8 into the chamber 10 and open communication between the passage 9 and the bleed openings 14 so as to allow the exhaust from the motor.

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of this invention as defined by the following claims.

I claim 1. In a valve-operating mechanism, the combination ofmeans having a passage for fluid therein, a valve controlling the flow of fluid through said passage, a fluid-controlled diaphragm, a cam and a spring element carried by said valve and diaphragm and coacting with each other for causing the shifting of said valve through the actuation of said diaphragm, an adjustable device for regulating the tension of said spring, and means controlling the actuation of said diaphragm.

2. In a device of the class described, the combination of a valve and diaphragm associated with a quick-throw device comprising a cam and a lever, resilient arms for coacting with said cam, secured to said lever and extending parallel therewith, and a clip embracing said arms, slidably mounted on said lever for adjusting the resiliency of said arms with respect to said cam.

3. In a valve-operating mechanism, the combination of a frame having a fluid passage extending therethrough, a valve controlling the flow of fluid through said passage, a fluidcontrolled diaphragm, a cam carried bysaid diaphragm, and comprising two conical portions arranged base to base, a lever connected to shift said valve, a spring rod extending transversely tothe axis of said cam and carried by said lever and coacting with the conical portions of said cam to shift said valve through the actuation of said diaphragm, and means controlling the actuation of said diaphragm.

4. In a valve-operating mechanism, the combination of a frame having a fluid passage extending therethrough, a valve controlling the flow of fluid through said passage, a fluidcontrolled diaphragm, a cam carried by said diaphragm, and comprising two conical portions arranged base to base, a lever connected to shift said valve, a resilient fork carried by said lever and coacting with the conical portions of said cam to shift said valve through the actuation of said diaphragm, and means controlling the actuation of said diaphrag '5. In a valve-operating mechanism, the combination of a frame having a fluid passae extending therethrough, a valve controlling the flovv of fluid through said passage, a fluid-controlled diaphragm, a cam carried by said diaphragm and comprising tWo cones arranged base to base, a lever pivotally mounted on said frame and connected to shift said valve, resilient arms secured to said lever and forming a fork yieldingly tWo cones arranged base to base, a lever" Copies of this patent may be obtained for engaging said cones so as to actuate said lever by the shifting of said cam, and mechanism controlling the actuation of said dia phragm.

6. In a valve-operating mechanism, the,

combination of a frame having a fluid passage extending therethrough, a valve con trolling the flow of fluid through said passage, a fluid-controlledv diaphragm, a cam carried by said diaphragm and comprising pivotally mounted on said frame and connected to shift said valve, resilient arms secured to said lever and forming a fork yieldingly engaging said cones so as to actuate said lever by the shifting of said cam, means verse part thereof and having the arms thereof extending along the sides of the lever so that their outer'ends form a fork engaging said cones so as to actuate said lever bythe shifting of said cam, and means controlling the actuation of said diaphragm;

8. In a valve-operating mechanism, the

the 7 extending therethrough, a valve 0011- combination of a frame having a' fluid passage extending therethrough, a valve controlling the fiovv of fluid through said'passage, a fluid-controlled diaphragm, a cam carried by said diaphragmand comprising two cones arranged base to base, a-lever pivotally mounted on said frame and connected to shift said valve, a resilient rod bent U- shaped secured to said lever atthe transverse part thereof and having the arms thereof extending along. the sides of the lever sothat their outer ends form a fork engagingsaid cones so as to actuate said lever by the shifting of said cam, said lever having grooves formed 'thereln adapted to receive saidarms; and secure them against displacement, and means controllingthe actuation of said diaphragm.

' 9 In a valve-operating mechanism, the combination of a frame having a fluid passage extending therethrough, "a valve con-' trolling'the flow of fluid through said passage, a fluid-controlled diaphragm, a cam carried by said diaphragm and comprising two cones arranged base to base, a lever pivotally mounted on said frameand connected to shift said valve, a resilient rod bent U- shaped secured to said lever at the transverse part thereof and having the arms thereof extending along the sides of the lever so that their outer ends form a fork engaging said cones soas to actuate said lever by the shifting of said cam, a clip slidably mounted on said lever and embracing said arms and adapted to adjust the resiliency thereof, and means controlling the actuation of said diaphragm.

Signed at Chicago this 31st day of August JOHN H. SWAN.

WVitnesses:

EDWI PHELPS, M. IRENE HUTCHINGS.

five cents each, byaddressing the Commissioner of Patents,

Washington, 1). 0. 

